/*
 * The MIT License
 *
 * Copyright (c) 2016, CloudBees, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

package org.jenkinsci.plugins.pipeline.modeldefinition.ast;

import edu.umd.cs.findbugs.annotations.NonNull;

import org.apache.commons.lang.StringUtils;

import java.util.ArrayList;
import java.util.List;

/**
 * Represents the special step which are executed without validation against the declarative subset.
 * @see ModelASTScriptBlock
 * @see ModelASTWhenExpression
 */
public abstract class AbstractModelASTCodeBlock extends ModelASTStep {

    protected AbstractModelASTCodeBlock(Object sourceLocation, String name) {
        super(sourceLocation);
        this.setName(name);
    }

    @Override
    @NonNull
    public String toGroovy() {
        StringBuilder result = new StringBuilder(getName()).append(" {\n");
        result.append(codeBlockAsString());
        result.append("\n}\n");
        return result.toString();
    }

    public String codeBlockAsString() {
        if (getArgs() == null) {
            return null;
        } else if (isLiteralSingleArg()) {
            Object v = getSingleValue().getValue();
            if (v instanceof String) {
                List<String> retList = new ArrayList<>();
                for (String s : v.toString().split("\\r?\\n")) {
                    retList.add(s.trim());
                }
                return StringUtils.join(retList, "\n");
            } else {
                return v.toString();
            }
        } else {
            return getArgs().toGroovy();
        }
    }

    protected ModelASTValue getSingleValue() {
        if (getArgs() instanceof ModelASTSingleArgument) {
            return ((ModelASTSingleArgument) getArgs()).getValue();
        } else if (getArgs() instanceof ModelASTNamedArgumentList) {
            ModelASTNamedArgumentList namedArgs = (ModelASTNamedArgumentList) getArgs();
            if (namedArgs.getArguments().size() == 1 && namedArgs.containsKeyName("scriptBlock")) {
                return namedArgs.valueForName("scriptBlock");
            }
        }
        return null;
    }

    protected boolean isLiteralSingleArg() {
        return getArgs() != null
                && getSingleValue() != null
                && getSingleValue().isLiteral();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        AbstractModelASTCodeBlock that = (AbstractModelASTCodeBlock) o;

        if (getName() != null ? !getName().equals(that.getName()) : that.getName() != null) {
            return false;
        }
        if (isLiteralSingleArg() && that.isLiteralSingleArg()) {
            return codeBlockAsString().equals(that.codeBlockAsString());
        } else {
            return getArgs() != null ? getArgs().equals(that.getArgs()) : that.getArgs() == null;
        }
    }

    @Override
    public String toString() {
        return getClass().getSimpleName() + "{" +
                "name='" + getName() + '\'' +
                ", args=" + getArgs() +
                "}";
    }

}
